Dental apparatus



(No Model.) M. KNAPP. DENTAL APPARATUS.

No. 369,114. Patented Aug. 30, 1887.,

In Venl'or. Mum Elam 9,4,.

N. PETERS. PhomLRhogF-pher. WilhillflDlL D. c.

UNIT D STATES PATENT OFFIC MILTON H. KNAPP, OF JACKSON, MICHIGAN.

DENTAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 369,114, dated August 30, 1887.

Application filed January 13, 1887. Serial No. 224,194. (No model.)

To aZZ whom it may-concern.-

Be it known that I, MILTON H. KNAPP, of Jackson, in the county of Jackson and State of Michigan, have invented new and useful Improvements in Dental Apparatus; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in dental'apparatus.

The invention has for its object the con.- struction of an apparatus especially designed for dental use during the process of filling or examining teeth. Ordinarily the rubber dam is placed in the mouth of the patient; but the mouth-mirror is held in the hand of the operator, his assistant, or is secured to the chairor table. Thus, should thepatient change the position of the head, the focus is destroyed and the mirror has to be again adjusted.

The invention consists in the construction of a chin-piece, in an adjustable mouth-mirror, in an adjustable magnifier, and in the construction, arrangement, and combination oi the various parts, all as more fully hereinafter set forth.

Figure 1 is a perspective view of my improved device. Fig. 2 is a diagram showing same as secured to the patient.

In the accompanying drawings, which form a part of this specification, A represents'a chin-piece, preferably of metal, although other material may be employed, if desired. This chin-piece is provided with a laterallyprojecting slotted flange, B, in which is adjustably secured a post, 0. I

D is the mouth-mirror, which is connected by a flexible arm, E, to the head of the standard or post. This flexible arm I preferably construct of alternate single and double links a b, respectively clamped together with balland-socket joints, thus providing anniversal arm by mean's'of which the mouthpiece can readily be adjusted to the desired position in the mouth of the patient.

F is another post or standard, adjustably secured in the slotted flange B, and to this post a magnifying-glass, G, is attached by means of a flexible arm, H, preferably constructed like the arm E, hereinbefore described.

If desired, the post 0 may be secured in a slotted link, J, adj ustably securedin theslotted flange B.

"he chin-piece is provided with a bridle, K, by means of which the device is secured to the head of the patient.

By the employment of a device of this character wherein the support of the mirror and glass are attached to the chin of the patient, the operator can readily adjust the apparatus so that no movement of the head of the patient will destroy the focus, and thus leaving the free use of both hands in the performance of his work. The chin-piece not only acts as the support, as described, but it also serves as a dam-holder, obviating the employment of weights and other appliances now generally used.

There are many circumstances connected 3. In combination with achin-piece, a magnifying-glass adj ustably secured to said chinpiece by means of a flexible arm, substantially as and for the purposes specified.

4. In combination with a chin-piece, A, an adjustable post, 0, the mouth-mirror D, and flexible arm E, substantially as and for the purposes described.

5. The combination, with a chin-piece, A, carrying an adjustable post, F, of a magnifying-glass, G, and flexible arm H, substantially as and for the purposes set forth.

MILTON H. KNAPP.

Witnesses:

H. S. SPRAGUE, E. SoULLY. 

